Boring-machine



'(ModeL) Y 2 Sheets-Sheet 1.

Z. Oi PHILLIPS.

' V BORING MACHINE.

No. 296,053. Patented Apr. 1.1884.

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UNITED STATES FFrcE.

PATENT BORING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 296,053, dated April 1,1884.

. Application filed November 28, 1883. (MotleL) To all whom it mayconcern:

Be itknown that I, ZAOHARIAH O. PHIL LIPS, of Allegheny, in the countyof Allegheny and State of Pennsylvania, have invented 5 a new and usefulImprovement in'Boring Machines; and I do hereby declare the following tobe a full, clear, and exact description thereof.

My invention relates to an improvement in boring-machines,- and itconsists in an improved boring-machine which is automati-"callyself-withdrawing, and in which augers having shanks of any lengthmay be used. I will now describe my invention so that others skilled inthe art may manufacture and use the same, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure 1 is a front elevation of my improved apparatus. Fig. 2 is a sideelevation of the adjusting-quadrant. Fig. 3 is a plan view of themiter-wheels and shafts, and Fig. 4 is a detached view of the piecesforming the extensionhandles. v

Like letters of reference indicate like parts wherever they occur.

a :Ehe essential parts of my improved boring apparatus are a vertical.hollow auger-shaft, and a horizontal crankshaft, connected by skewmiter-wheels or by other devices, a rack, a pinion mounted'on thecrank-shaft, a clutch for engaging the pinion with the shaft, and

devices'for throwing the clutch in and out of gear with thepinion, ashereinafter more fully appears; also in theconstruction and arrangementof the parts of the apparatus.

. In the drawings, a represents the bed-frame, at one end of which ispivoted the vertical standards or frame I; b, which are held at thedesired angle with the frame a by means of the quadrant c, the lower endof which is pivoted to the frame a, while the other end passes d througha slot in the plate 11 on the frame b,

so that the frame b may be held by the key (Z, which is wedge-shaped,and is placed in the slot below the quadrant.

Situated between the standards b b is the sliding frame 6, in which ismountedthe vertical hollow rotating auger-shaft f, in which, at thecollars g, are the set-screws or bolts 71., or other device for seizingthe'auger-shank when it is inserted in theshaft.

In order that the apparatus may be used with angers having shanks ofdifferent lengths, the shaft is hollow throughout its length, and thehorizontal crank-shaft. t is situated not over the shaft f, but at oneside thereof, to permit the passage of the shank of the auger. Thiscrank-shaft t is mounted on bearings 70, extending from the slidingframe 6, and the two shafts are connected by the skew miterwheels at a,the wheel m being keyed to the shaft f, and the wheel a being attachedto the shaft t by a feather or spline; or, as shown in the drawings, bya pin, a, passing through a longitudinal slot in the sleeve 12 formed onthe wheel around the shaft.

Fitting loosely on the shaft i, outside of the bearing 75, is apinion-wheel, 0, which meshes into a rack, 10, 011 the standard I). Y

Keyed to the shaft 2', at each end thereof,

are the crank-arms q g, at the end of which arms on the shaft are thecollars q 1 which are fixed 011 the shaft, and have inclined or slopinginner faces. On the outer face of the pinion 0 is a projecting lug, o,and a similar lug is formed on the inner face of the collar g, whichlugs engage with each other when the collar g is thrown against thepinion and form a clutch whichcauses the shaft '5 to be carried by themovement of the pinion in the rack. Around the shaft '5, between thepinion o and collar q, is a spiral spring,

At the upper end of the standard bis astop, 9', having .an inclinedface, which, coming in contact with the inclined face of the collar q,when the shaft t is brought to the top of the frame b, gives the shaft ia horizontal longitudinal movement, which disengages the lugs on thepinion and collar from each other. On the other standard I) is a slidinglug or stopgage, s, which may be fixed at any desired point on thestandard by a key, '5, the face of which stop is also inclined, so thatwhen the shaft 7: descends the inclined face of the collar g coming incontact with the inclined face of the stop, the shaft '13 is given alongitudinal horizontal movement,which throws the lugs 0 and q into gearor contact with each other, so that the pinion shall be therebyconnectedwith the shaft.

IOC

The operation is as followszThe shank of theauger is inserted in thehollow auger-shaft 0, and fixed therein by the set-screws or otherdevices h, the shaft t being in the position shown in Fig. 1, the pinion0 and collar j being disconnected from each other, and the auger tresting on the wood or other substance in which the hole is to be bored.As the crank-arms q are turned, causing the shafts z and fto rotate 011their axes,while the pinion 0, being mounted loosely on the shaft andbeing disengaged from the collar q, travels idly on the rack 19, theauger enters the wood and the frame 0 descends until the collar q comesin contact with the stop-gage s, the inclined face of which gives theshaft i a longitudinal movement, overcoming the force of the springwithout moving the pinion 0 or disengaging it from the rack 19, thepinion being held stationary by the friction between the gear-teeth, theshaft i sliding in the axial cavity of the pinion, which movement throwsthe lug on the face of the collar q into contact with the lug on thepinion 0, so that when the shaft 6 revolves the lug 011 the collar qcarries the pin ion with it in its revolution, and as the teeth of the'pinion gear in the rack the revolution of the pinion 011 its axiscarries the frame and anger to the top of the standard b,where, thecollar coming in contact with the stop r, the shaft i is given alongitudinal movement in the reverse direction, which separates theclutch lugs and brings the shaft '0 to its former position, and arecess,w, formed in the face of the collar Q2, engages withalaterally-projecting arm or lug at the top of the standard b, whichholds the frame 6 in its elevated position. The frame is then moved to anew position. By striking or pushing the end of the shaft i the recess wis released from the lug and the auger is allowed to drop as the spring13 carries the shaft t back again after the blow has been struck or thepressure is removed from the end of the shaft. The operation asdescribed is then repeated.

The crank-arms q are formed in two pieces, '0 at, one of which, on itsmeeting surface with the 0ther,is provided with a projecting rib,v',which fits in a corresponding groove, w, on the face of the other piece,and the two pieces are fixed at any point in relation with each other bya link, y, and wedge-shaped key z, so that the arms may be lengthened orshortened, as desired.

The advantages of my improved apparatus are that the auger-shaft isautomatically selfwithdrawing, that it may be adjusted to bore holes ofany desired depth, and that angers having shanks of different lengthsand sizes may be attached to and used with the apparatus.

I am aware that the use of a quadrant and securing devices for thepurpose of adjusting the angle of the boring apparatus is not new; andalso that crank-arms formed in two pieces, so as to be adjustable, havebeen used before. I do not therefore desire to broadly claim the same;but,

Having thus described my invention, what I claim, and desire to secureby Letters Patent,

1. In aboring-machine, an auger-shaft hollow throughout its length,incombination with a crank-shaft geared to the auger-shaft and situated ona different vertical plane, substantially as and for the purposespecified.

2. In a boring-machine, a crankshaft capable of receiving a longitudinalas well as an axial movement,and mounted in bearings on a sliding frame,a pinion and rack, a clutch for con necting the shaft with the pinion,and devices for imparting an automatic longitudinal movement to theshaft, substantially as and for the purpose specified.

3. In a boring-machine, the combination of a crank-shaft capable ofreceiving a longitudinal as wellas an axial movement, a pinion and rack,a clutch and stops, one of which is adjustable, having inclined facesarranged to move the shaft longitudinally, so as to connect anddisconnect the shaft and pinion, substantially as and for the purposespecified,

In testimony whereof I have hereunto setmy hand this 21st day ofNovember, A. D. 1883.

ZAOHARIAH O. PHILLIPS.

\Vitnesses: e

W. B. GORWIN, JNo. K. SMITH.

